Debates about vaccines and climate change on social media networks: a study in contrasts

Justin Schonfeld, Edward Qian, Jason Sinn, Jeffrey Cheng, Madhur Anand and Chris T. Bauch ()
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Justin Schonfeld: University of Waterloo
Edward Qian: University of Waterloo
Jason Sinn: University of Waterloo
Jeffrey Cheng: University of Waterloo
Madhur Anand: University of Guelph
Chris T. Bauch: University of Waterloo

Palgrave Communications, 2021, vol. 8, issue 1, 1-10

Abstract: Abstract Vaccines and climate change have much in common. In both cases, a scientific consensus contrasts with a divided public opinion. They also exemplify coupled human–environment systems involving common pool resources. Here we used machine learning algorithms to analyze the sentiment of 87 million tweets on climate change and vaccines in order to characterize Twitter user sentiment and the structure of user and community networks. We found that the vaccine conversation was characterized by much less interaction between individuals with differing sentiment toward vaccines. Community-level interactions followed this pattern, showing less interaction between communities of opposite sentiment toward vaccines. Additionally, vaccine community networks were more fragmented and exhibited numerous isolated communities of neutral sentiment. Finally, pro-vaccine individuals overwhelmingly believed in anthropogenic climate change, but the converse was not true. We propose mechanisms that might explain these results, pertaining to how the spatial scale of an environment system can structure human populations.

Date: 2021
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DOI: 10.1057/s41599-021-00977-6

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